Mechanics

HIGHWAY PERFORMANCE WITH PREMIUM FUEL

1990 Jaguar XJ6

Engine Performance problem
1990 Jaguar XJ6 6 cyl Two Wheel Drive Automatic 200, 00 miles

I have heard that a car runs better and performs better with premium fuel vs convenience stop fuel. What is your opinion on fuel necessary to always have a excellent highway trip of 550 miles (round trip).
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Mcnairberyl@yahoo.com
October 4, 2010.




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